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US 3987163

How Polystyrene Sulfonate Helps Treat Dry Eye Symptoms

A 1975 patent for an eye drop solution that uses a specific polymer to lubricate and cushion the eye, especially for contact lens wearers.

Statusactive

Granted1976

Expires1995

Claims9

Forward citations37

Prior art5

AssigneeBurton Parsons and Co Inc

InventorsBilly F. Rankin

Patent B

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